Active NPI
Chester B. Kozak II, PA-C
- Physician Assistant
- Leavenworth, KS
National Provider Identifier
1346203072
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- 00271
- Practice address
- 4101 S 4TH St
Leavenworth, KS 66048-5014 - Phone
- (913) 682-2000
- Fax
- (913) 758-4185
- NPI assigned
- Apr 12, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | 00271 | KS | Primary |
Addresses
Primary practice location
4101 S 4TH St
Leavenworth, KS 66048-5014
Mailing address
1530 Southern Hills Ter
Lansing, KS 66043-6202
Phone (913) 250-0334
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Physician Assistant
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 00271 | KS | MD | Physician Assistant |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Adventhealth Ransom Memorial, Inc. | Past | Accepting new patients | |
| Orthokc Professional Association | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
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NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1144800000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1346203072",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1530 SOUTHERN HILLS TER",
"city": "LANSING",
"state": "KS",
"postal_code": "660436202",
"telephone_number": "913-250-0334",
"fax_number": "913-250-0334"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4101 S 4TH ST",
"city": "LEAVENWORTH",
"state": "KS",
"postal_code": "660485014",
"telephone_number": "913-682-2000",
"fax_number": "913-758-4185"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KOZAK",
"first_name": "CHESTER",
"middle_name": "B.",
"name_prefix": "Mr.",
"name_suffix": "II",
"credential": "PA-C",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-04-12",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "KS",
"license": "00271",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Leavenworth, KS
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.